辽河水域鱼类资源调查

Survey of the fish resources of Liao River

于2020年7月(夏季)、9月(秋季)和11月(冬季)开展对辽河水域的鱼类资源调查,调查设计样点13个,共采集鱼类32种,隶属于5目10科30属。其中鲤形目最多,共计21属23种,占65.63%;鲈形目5属5种,占15.63%;鲇形目2属2种,占6.25%;鲑形目和鳉形目各1属1种,各占3.13%。结果显示,辽河流域鱼类在生活类型、摄食以及繁殖方式等方面呈多样性,辽河流域的鱼类区系复合体以晚第三纪早期区系复合体和中国平原区系复合体为主。

A survey of fish resources of Liao River was carried out in July(summer),September(autumn)and November(winter)in 2020,a total of 32 species,belonging to 30 genera,10 families and 5 orders,were collected from 13 sample sites.Cypriniformes(23 species,21 genera),Perciformes(5 species,5 genera),Siluriformes(2 genera,2 species),Salmoniformes(1 species,1 genera)and Cyprinodontiformes(1 species,1 genera)accounted for 65.63%,15.63%,6.25%,3.13%and 3.13%of the total fishes collected,respectively.The results showed that the fishes in the Liao River were diverse in life types,feeding and reproduction mode.The fish faunal complexes in the Liao River Basin were dominated by the early period of the Late Tertiary Period faunal complex and the Chinese plain faunal complex.